985529 has 2 divisors, whose sum is σ = 985530. Its totient is φ = 985528.

The previous prime is 985519. The next prime is 985531. The reversal of 985529 is 925589.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 846400 + 139129 = 920^2 + 373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985529 is a prime.

Together with 985531, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 985492 and 985501.

It is not a weakly prime, because it can be changed into another prime (985519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492764 + 492765.

It is an arithmetic number, because the mean of its divisors is an integer number (492765).

2⁹⁸⁵⁵²⁹ is an apocalyptic number.

It is an amenable number.

985529 is a deficient number, since it is larger than the sum of its proper divisors (1).

985529 is an equidigital number, since it uses as much as digits as its factorization.

985529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 38.

The square root of 985529 is about 992.7381326412. The cubic root of 985529 is about 99.5152876689.

The spelling of 985529 in words is "nine hundred eighty-five thousand, five hundred twenty-nine".